Not a trust fund baby, but I am friends with a guy whose is quite well off. Like closer to "B" money than mere 'M" money.

Works like a hebrew slave on his hunting property, rarely hires anyone to help, and still hunts with the rifle is parents bought him when he was 16.
Drives a F250 with 200K miles on it hasn't bought beef in 17 years. All venison, most of it processed by him and his family.

They literally give away millions a year and most people have no idea.

He has two sons, both have a full time 40Hr a week jobs. It slipped out one night while having cocktails, he had set up each of the boys a GRAT that moved "wealth". But these young guys still work and still raise their family in what would be "modest" means by any measure.